Stop motion for carding machines



May 14s 1946- B. F. uNDERwooD x-:TAL A2,400,275"

. STOP MOTION FOR CARDING' MACHINES Filed Jung 1e; `1945 3 sheets-sheet 1 y vBenjcl'r'rvuar)1 FA Underwood John c. Gmnf May 14," i946.

B. F. UNDERWOD ET A1. 2,400,275

STOP MOTIO'N FOR CARDINGMACHINES Filed June 16, 1945 '5 Sheets-Sheet. 2

Benj amm Underwood John C. Grani'- MJL,

lMay 14, 1946.

B. F. UNDERWOOD ET AL STOP MOTION FOR GARDING MAHINEs Filed 'June `11s, 1945 s sheets-sheet 5 .gn/umm: wbod BenJarruzLnd F Under' Joh-n C. Gran. @M Ej awww Patented May 14, 1946 I UNITEDV STATES PATENT oFFIcE f Benjamin' F. Underweod and John-Q-Grant,

Easley, S. C.

Application June 16, 1945, serial No. 599,784

(o1. isi- 167) 1.y Claim.

This invention relates to astop motion for card- Great inconvenience and damage has hereto-V fore been caused to carding machines by foreign objects such as pieces of metal, Wood and the like being imbedded or 'contained in the lap of fibers being Vpassed into thejcarding machine which causes great damage to themote knives, licker-in, flats, and sometimes 'damaging the clothing on the carding cylinders, which is very expensive. Also much time is lost in repairing the same.

It is an object of this invention to provide a stop motion mechanism for stopping the feed roll and the doifer roll of a cardingmachine when a foreign object is disposed Within the lap of fibers being carded or when the lap of fibers is too thick as Where an incoming lap end is lapped over an outgoing lap end to make the fibers too thick at that point which will clog the carding machine. This invention will stop the doffer and the feed roll and preventthe card from choking down which otherwise would result Where the overlapped ends of two adjacent webs of fibers were passed into the machine.

It is another object of this invention to provide means automatically operable for moving the doffer lever to stop the feed roll and the doffer roll when the lap becomes too thick or when foreign objects such as pieces of metal and the like are disposed within the lap being fed into the carding machine.

It is another object of this invention to provide means adapted to be associated with the feed roll of a carding engine and having a connection for manipulating the doier lever of the carding engine to quickly stop the feed roll and the dofier roll when a foreign object such as a piece of metal and like is disposed within the lap being processed by the carding machine or when the lap is too thick at any point or thick enough to result in Achoking of the carding machine.

Some of the objects of this invention having been stated, other objectswill appear as the description proceeds when taken in connection With the accompanying drawings in which:

-Figure lis a side elevation of a carding machine and showing the invention attached thereto ;y

Figure 2 is a top plan view of Figure` ,1; Figure 3 is an elevation of the other side of the left hand end of the carding machine from that shown in `ligurejl or an elevation being taken substantially along lthe line 3-3 in Figure 2;

Figure 4 is a'vertical sectionalv'iew taken substantially along the line 4-4in Figure 2;

Figure 5 is an end elevation of the right han end of Figure 1 looking from substantially along the line 5-5 in Figure 1;

vFigure `6 is an elevational end view looking at theleft hand end of Figure '1, and omitting the feed roll and brackets for holding the lap roll.V

Referring more specifically tothe drawings., the numeral indicates the uprights of the frame of a carding machine having horizontal base bars and top longitudinally,extending frame bars |2.1This carding machine has a Vconventional rotary cylinder I3 .having suitable: card clothing thereon. The machine hasv a set of iiats |4.Which is schematically shownandj has a doffer roll |5 provided With a shield I6 over its drive Wheels |6a. It also has a suitable bracket Il on each side having in each bracketa slot |8r in which the lap pin |9-of a lap roll 2|! is adapted to be disposed. The lap 2| extending from the lap roll is fed into the machiney by means such as a feed roll 22. Mounted on the top longitudinal bars l2 are the bearings 23 having vertical slots 23a in which the ends of feed shaft have vertical movement. The feed roll 22 is pressed against the lap 2| by means of the horizontal top frame bars I2 having rising suitable uprights 24 in which one end of levers 25 are loosely mounted, each of these levers having a bearing surface 2% and `on the outer ends of these levers 25 are mounted Weights 21 which are adjustable along the levers 25 for regulating the amount of pressure applied to the lap 2|. The feed roll 22 Yis driven by any suitable means such as a pinion 28 having a geared connection with pinion 29 which is driven by pinion 26 connected to the driven mechanism of the machine not shown. The above described mechanism is conventional and it is with this conventional mechanism that the yinvention is adapted to operate. v

Rotatably mounted in the upper portion of the end uprights i0 is a shaft 30 which is coupled together by a coupling 3| and on one end of this shaft is mounted an arm 32 which has connected thereto a U-shaped rod 43 which has one arm mounted in a suitable hole in the free end of the arm 32 and the other arm projecting into a suitable hole in the weight 21. On the other end of shaft 30 is secured an arm 33 which likewise has one leg of another U-shaped member 34 piercing the free end thereof, while the upper end of this U-shaped member 34 penetrates a suitable hole in the other weight 21 on the other lever 25.

Also adjustably secured on the shaft 3 is an arm 35 which projects downwardly and has pivotally connected thereto one end of a rod 3G, which rod has a suitable coupling 31 therein intermediate its ends for overall adjustment of the length of the rod. The other end of the rod 3B is pivotally secured as at 38 to the upper end of a tripping lever 39 pivoted on a pin 40 which is disposed in the lower end of brackets 4l and Ma whose upper ends are secured to one of the guards I6.

Mounted between the brackets 4| and 41a is a doffer lever trigger 44 which is also mounted on the pin 40. This doffer lever trigger 44 is substantially an inverted L-shape and on the upper surface of its upper leg is adapted to rest a conventional doffer lever 45 of the carding machine. This doifer lever controls the feed roll 22V to stop the same when the doffer lever is actuated. The lower end of the tripping arm support 33 has an outwardly andk downwardly and then outwardly projecting pin 46 which projects adjacent. to the lower and inner side surface of the doiing lever trigger 44.

The lap 2l is supported in any suitable manner. It may slide along. a suitable metal plate or may be conveyed by a suitable endless conveyor 5U suitably supported by a plate 5l which, of course, is conventional in a carding machine.

It is thus seen that when a portion of the lap which is too thick and which would clog the carding machine, or a foreign object, such as a piece of metal or other object, passes under the feed rolll 22, one or both of the levers 25 will be raised upwardly which will raise one or more of the weights 21 which will move arms 32 and 33 and will oscillate shaft 30 which will swing lever 35 to the left of Figure 1 which will swing the trigger arm support 39 in a counterclockwise manner which will raise the doifer lever trigger 44 oscillated on pin 4D in a counterclockwise direction which will raise the free end of dofer lever 45 to stop rotation of the feed roll and doier roll.

This will occur whether the thick place or the foreign object in the lap occurs in the center of the feed roll 22 or out near one edge of the same and that is why there is lprovided the shaft 30 extending all the way through the machine and also an arm suitably connected, as described, to each of the weights 21.

In the drawings and specication there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used ina generic and descriptive sense only, and not for purposes of limitation,

vlower end fitting against the lower end of the the scope of the invention being dened in the claim.

We claim# In a carding machine through which a lap of fibers is adapted to be passed, said, machine having. a feed roll for feeding the lap of fibers into the machine, and also having a doifer roll, said machine also having weighted levers for pressing the feed roll into engagement with the lap of fibers, said machine also having a doier lever for controlling rotationof the feed roll and the doffer roll, a bracket mounted on the machine and having a horizontal pivot pin, a tripping lever pivoted intermediate its ends on said pin, a doifer lever trigger pivoted on said pin and having a cam face on its upper end on which the free end of the doffer lever rests, said tripping lever having a laterally projecting pin in its doffer lever trigger, a rod pivotally connected to the' upper end of the tripping lever and extending longitudinally of the machine, a shaft osciln latably mounted in the machine and extending across the machine below the weighted levers, an arm xedly secured on each end of the shaft, the free ends of said arms having a link pivotally secured thereto and the other ends of the links being secured to the weighted levers, a downwardly projecting arm secured on the end of the shaft on the same side of the machine where the tripping arm support is mounted and having its lower end pivotally connected to the other end of said rod, whereby when one of the weighted levers is raised .the shaft will be oscillated to swing the tripping lever on its pin to pivot the doiTer lever trigger to thus move the doffer lever to stop rotation of the feed roll and the doffer roll.

BENJAMIN F. UNDERWOOD. JOHN C. GRANT. 

